Chris,
can you elaborate a little bit?? I'm not following you on your last post. what do these wires do?
thanks for all the great info.
That plug is for the steering wheel controls and amp wire to activate the speakers.
06+ DX,LX Civic coupes do not have the amp wire on that plug.
06+ DX,LX, EX Civic Sedans do not have the amp wire on that plug either.
So, if you have either of those models, you hook the speakers to the white plug on the d3 and not to the rca connectors.
If you have an 06+ EX, Si Coupe model or 07+ Si Sedan, then you will have an amp wire that will activate your speakers(#15 on the diagram i posted above).
Anyways, If you want to keep control of your stereo steering wheel controls(this is mainly for 06+ civic ex sedans), you might want to install the PAC-SWI-PS module. Follow my last post and do not forget to read the manual that comes with your PAC-SWI-PS module!
If your car did not come with stereo steering wheel controls, then do not bother.